18136342 has 16 divisors (see below), whose sum is σ = 31232160. Its totient is φ = 7737408.

The previous prime is 18136319. The next prime is 18136357. The reversal of 18136342 is 24363181.

It is a super-2 number, since 2×18136342² = 657853802281928, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18136342.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378 + ... + 6034.

It is an arithmetic number, because the mean of its divisors is an integer number (1952010).

Almost surely, 2^18136342 is an apocalyptic number.

18136342 is a deficient number, since it is larger than the sum of its proper divisors (13095818).

18136342 is a wasteful number, since it uses less digits than its factorization.

18136342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5895.

The product of its digits is 3456, while the sum is 28.

The square root of 18136342 is about 4258.6784335049. The cubic root of 18136342 is about 262.7341741019.

The spelling of 18136342 in words is "eighteen million, one hundred thirty-six thousand, three hundred forty-two".